When a month is not a month
A price quoted “monthly” but billed every four weeks arrives thirteen times a year. That is an eight per cent premium invisible on the price tag and obvious on a bank statement. 32 sellers here record an interval that is not a calendar month, and 21 of them are on the four-week cycle.
Framework
billed every a week · about 52 charges a year
Framework prices per WEEK, not per month: 'GLP 1s For As Low as $25/Week'. Fifty-two weeks is $1,300 a year, so the calendar month is $108.33, not $100. '$0 membership fees.'
Iron Med RX
billed every a week · about 52 charges a year
'Starting at $149 — GLP-1 Injections — one simple injection per week', with no insurance required, free shipping and no membership fee. Iron Med RX does not say which GLP-1 medication this is.
Pepton Health
billed every a week · about 52 charges a year
Card reads 'Starting at $179 / GLP-1 Injections / One simple injection per week' and names no molecule. Refill pricing is behind account creation.
Aspire Health
billed every four weeks · about 13 charges a year
Verbatim from weight-loss page: '$249' for 5-week supply of compounded tirzepatide/B6 (2.5 mg) + $75/month LoseIt program fee = ~$289/month total. 15-week supply at $699 (~$202/mo for medication alone). 'Medication costs are not included in either program fee.' Re-read September 14, 2026: now $149, was $289. $149 buys a four-week vial at 2.5 mg weekly, which is $161 a calendar month, plus the same $49/month medical-care fee.
boostAGErx
billed every four weeks · about 13 charges a year
GLP-1 'starting at $95/mo' on 12-month plan paid upfront; actual price varies by product/plan $95 is the twelve-month prepay average; one month is the $225 four-week plan, and thirteen fills a year is $243.75.
billed every four weeks · about 13 charges a year
Starting package $250 covers medical assessment, tailored plan, and 8-10 weeks of medication/supplies (2.5-20mg vials). Ongoing cost is pay-per-vial; site-published 'Average Monthly Cost' is $160/mo at a typical 0.5-1.5mg/week dose. Source: contourhealthrx.com/weight-loss. Re-read September 14, 2026: now $120, was $160. $30 a week is $120 per four-week fill, and thirteen fills a year is $130 a calendar month.
billed every four weeks · about 13 charges a year
Sold in WEEK BLOCKS: '4 weeks $200, 8 weeks $350, 10 weeks $400, 12 weeks $500, 20 weeks $650'. ⚠ A $250 one-time consultation and a $50/month follow-up fee are charged on top. $200 per four-week block is $216.67 a calendar month, plus the $50/month follow-up subscription stated to exclude medication.
billed every four weeks · about 13 charges a year
Verbatim from /products/semaglutide: 'The monthly price is the same for all doses and does not increase as your dose goes up.' Includes 4-week vial (0.25–2.5 mg/week range). Plus $25/month provider care fee for dose titration and support (cancellable anytime). $199 medication plus the $25/month Care Access plan the product page states is required.
billed every four weeks · about 13 charges a year
⛔ Same 4-week cycle: 'a new monthly supply arrives automatically every 4 weeks' — about $3,887/yr across 13 charges, not $3,588. Price published only on the altroapp.com storefront. $299 on the same four-week cycle is $3,887 a year, or $323.92 a calendar month.
billed every four weeks · about 13 charges a year
Flat price at every dose; all-inclusive (consult, prescription, medication, shipping). $196 on the same four-week fill is $212.33 a calendar month.
billed every four weeks · about 13 charges a year
Verbatim from product page: 'From: $199.00 every 4 weeks.' Medication is compounded semaglutide+B12 in vial form with syringes and alcohol pads. Multiple dose tiers available (Full Dose, Starter 4-week, Starter 6-week, 8-week); $199 is entry-tier price. $199 every four weeks is thirteen fills a year — $216 a calendar month.
HeliMeds
billed every four weeks · about 13 charges a year
Paid upfront as a 12-week plan, not a subscription. Any dose is $199/mo. The $99 headline is the starter dose; any dose is a $597 twelve-week block labeled $199/mo, and twelve weeks is 2.76 calendar months, so $216. The same footnote prices the next four-week supply at $239.
Levity
billed every four weeks · about 13 charges a year
'First month: $1,249 (was $1,299) with code WELCOME, $1,299/mo thereafter.' ⚠ 'Billed & shipped approx. every 4 weeks', so 13 charges a year, not 12. Brand Mounjaro on the same four-week cycle: $1,299 thirteen times a year is $1,407 a calendar month.
billed every four weeks · about 13 charges a year
Low-dose line marketed for tolerability. Month-to-month, was $179. Ladder: $129 quarterly, $119 every 6mo, $109 annually. First Month Special $119. The microdose line: $149 buys a four-week supply, and thirteen fills a year is $161.42 a calendar month.
Midi Health
billed every four weeks · about 13 charges a year
From /glp1-pricing, headed 'No membership fees. No surprises.' ⚠ EVERY table is labeled '4-week supply', NOT a calendar month, so this is 13 cycles a year and must never be restated as '/mo'. Ladder runs $165.90 (0.1–0.5 mg) to $355.00 (2.5 mg). $165.90 buys a four-week supply, and thirteen fills a year is $179.73 a calendar month.
MyStart Health
billed every four weeks · about 13 charges a year
Homepage FAQ verbatim: program 'starts at $299/month, excluding any discounts,' all-inclusive (consults, unlimited clinician access, meds, labs, shipping). Promo banner '$150 Off + Lifetime 25% Off' (coupon SELFLOVE25 in funnel URL) but no final promo dollar price published pre-quiz — plan-selection pricing is gated behind a signed medical attestation, so not published. The monthly plan is auto-billed each month and ships a four-week supply, and thirteen four-week fills a year on a flat $299 is $324 a calendar month.
Piper
billed every four weeks · about 13 charges a year
$135 buys a four-week dosage, and thirteen fills a year is $146.25 a calendar month.
Prime Health
billed every four weeks · about 13 charges a year
A four-week supply, not a calendar month — 13 charges a year. The $299 program ships a four-week supply, so a year takes thirteen charges: $324 a calendar month.
Remedy Meds
billed every four weeks · about 13 charges a year
Microdose from $189/mo; prepaying 3–12 months brings it to $249–$149. The program bills monthly against a four-week supply, so a year takes thirteen fills: $324 a calendar month.
Rx.com
billed every four weeks · about 13 charges a year
'1 month $285 per month'. Longer plans are one upfront charge: 3 months $795 ($265/mo), 6 months $1,550 ($259/mo). Checkout fine print says billing continues every 28 days. The same four-week cycle on the tirzepatide rung: $308.75, or $309 a calendar month.
Sprout Health
billed every four weeks · about 13 charges a year
Homepage hero product card, confirmed on two independent surfaces, with no intro or promo qualifier attached. Re-read September 15, 2026: now $299, was $149. The re-swept $299 Monthly Plan is billed every four weeks for a four-week supply, so thirteen fills a year is $324 a calendar month; its six-month plan at $1,014 is billed in calendar months instead, at $169.
Sunlight
billed every four weeks · about 13 charges a year
Treatment card reads 'Semaglutide (Compounded) $88' and the FAQ confirms 'semaglutide starts at $88 and tirzepatide at $157. Each flat monthly rate includes your prescription'. A banner frames it as 'Summer Promo! As low as $88', but the site also promises 'Same price forever. No price increases ever. No hidden Fees.', so it is recorded as the standing rate rather than an intro price. $88 buys one four-week fill, and thirteen fills a year is $95 a calendar month.
TrueMe
billed every four weeks · about 13 charges a year
Dual-action compounded tirzepatide with added B vitamins. A 3-month plan works out to $139/mo but is billed as a single $417 payment. Re-read September 15, 2026: now $149, was $189. The re-swept $149 on the same four-week cycle is $161 a calendar month.
VitaStir
billed every four weeks · about 13 charges a year
Single-dose-vial kit, 30-day supply. The $99 listing is a one-week home kit; the cheapest published month is $125 for four injections, and thirteen four-week fills a year is $135. Its titration ladder then climbs to $245, $295, $345 and $395.
Alegro Health
billed every eight weeks · about 6.50 charges a year
199 dollars total for the full 8-week starter with B12 (about two months), select states, no monthly fees
billed every eight weeks · about 6.50 charges a year
Low-dose tier, and it is prepay-only: 12-month $169/mo, 6-month $179/mo, 3-month $189/mo. No one-month option is offered for microdosing at all. The microdosing plan bills $169 twelve times for a forty-eight-week term, and forty-eight weeks is 11.04 calendar months.
Balanced Hormone Health
billed every twelve weeks · about 4.33 charges a year
'Zepbound® Prescription — Starting at $139'. No period stated. The compounded starter is 60 mg total as a twelve-week supply at $499, and twelve weeks is 2.76 calendar months.
Big Easy Weight Loss
billed every twelve weeks · about 4.33 charges a year
Sold only in 12-week packages: 'Semaglutide Compounded Treatment — Starting at $495 for 12 weeks', discounted to $399 for new patients. $495 over 12 weeks is $165 a calendar month; the starter price works out at $133. $495 over twelve weeks is 2.76 calendar months, not three — $179 a month rather than $165.
billed every twelve weeks · about 4.33 charges a year
The $200/mo figure requires a 12-week prepaid term. Re-read September 14, 2026: now $259, was $219.
billed every twelve weeks · about 4.33 charges a year
'Patients Continuing GLP-1 Therapy: Standard Dose Levels: Monthly = $297, Quarterly = $822, 6 Month Supply = $1494' — so $274/mo on the quarterly and $249/mo on the six-month, both prepaid. The $197 promo is the same first-order $100 off with code NEWME100. ⚠ A separate NEW-PATIENTS-ONLY option exists: 'New GL JumpStart Bundle! 3 Month Supply = $599 — Initial 12 Week Supply: 2.5mg → 5mg → 7.5mg (4 weeks each)', i.e. $199.67/mo but only for patients new to GLP-1 therapy and only across the titration doses.
Noom
billed every twelve weeks · about 4.33 charges a year
Footnote 2 verbatim: 'Initial 3 week subscription and 4 weeks of medication from $79 plus tax and $199 per month plus tax for 12 week subscription thereafter.' Same three-clock structure as the main program. ⚠ A SITE-WIDE BANNER ADVERTISES A THIRD FIGURE THAT RECONCILES WITH NEITHER: '$49 Limited-Time Offer: Microdose GLP-1Rx Program (Compounded Semaglutide). Price includes medication.' The $49 is not explained anywhere on the page and does not match the $79 intro in the footnote — treat it as an unverified promotional entry price. Re-read September 15, 2026: now $179, was $199. The re-swept $179 is billed per month against a twelve-week subscription, so three payments of $537 buy 84 days — 2.76 calendar months — which is $195 a month.
Tryozi
billed every twelve weeks · about 4.33 charges a year
First 4 weeks $139 (50% off), then $279/mo. Multi-week plans are billed once and ship every 4 weeks: 12-week -22%, 24-week -29%, 52-week -47%.
Where this list comes from
From each seller’s own recorded pricing note, matched on the interval it names. There is no billing-interval field on this roster, and a seller absent from this list has not been shown to bill by the calendar month — it has simply not written the interval down anywhere this site has read. That makes the list a floor.